Thanks Dmitry,   
   Ada was where I started a few month ago, but the implemenation of Ada   
   relies on Pthread libraries and GCC backend. therefore, Ada is not   
   much useful to my implementation.  But you are right, the language is   
   somehow similar to Ada. The code snippet i posted is portion of the   
   dining-philosopher program, in addition to that,there is a host object   
   to restrict that only 4 people can enter the room and compete for   
   forks, thus deadlock is prevented.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)